how do i input complex numbers

Question

how do i input complex expressions

Answer 1

You need to set the rectangular mode (select rectangular in the mode window).

Rectangular mode will display results with the real and imaginary part.

Then you need to input something like 3+4i (not the usual I but the one close to "."). You can get the i by pressing "2nd" then "."

Check this interesting link : http://www.tc3.edu/instruct/sbrown/ti83/complx83.htm